JP2015210001A - Air blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air blower having a front panel capable of suppressing dripping of moisture and capable of improving designability while ensuring an air volume.SOLUTION: A bathroom ventilation drying heater 1A includes a front panel 4A attached to a lower side of a main body part 3 having a circulation ventilation fan 2 for sucking and blowing air. The front panel 4A includes an outer suction port 42 provided on a lower surface facing a bathroom so that air sucked from the bathroom passes therethrough, an inner suction port 43 provided on an upper surface confronting a circulation ventilation suction port 20 of the circulation ventilation fan 2 and communicated with the outer suction port 42, and a suction port air passage forming part 44 covering the lower side of the inner suction port 43 and receiving water dripping from the inner suction port 43.

Description

  The present invention relates to a blower installed in a bathroom or the like, and sucks and blows out indoor air.

  Conventionally, it has been installed at installation places such as the ceiling of a bathroom, and has achieved functions such as heating indoors and drying indoor objects by blowing in indoor air and blowing out hot air or air according to room temperature. A blower has been proposed. Many of such blowers have a function of ventilating indoor air to the outside, and are called bathroom ventilation dryers / heaters.

  The bathroom ventilation dryer is equipped with an air inlet and outlet on the lower surface of the front panel, and is installed on the ceiling of the bathroom, so that the inlet and outlet face the bathroom. In the bathroom ventilation dryer / heater, air to be dried is dried by air blown from the air outlet, and therefore, the air outlet is provided on the lower surface of the front panel so that the air blowing direction is directed downward.

  On the other hand, in addition to the configuration in which the air suction port is provided on the lower surface of the front panel, a technique has been proposed in which the air suction port is provided on the side surface of the front panel (see, for example, Patent Document 1).

  Since the air in the bathroom contains moisture, moisture in the air sucked into the bathroom ventilation dryer may be condensed. In the configuration in which the suction port is provided on the lower surface of the front panel, there is a possibility that condensed water may drip into the bathroom from the suction port. On the other hand, in the configuration in which the suction port is provided on the side surface of the front panel, dripping of condensed water can be suppressed.

Japanese Patent No. 5460921

  In the configuration in which the suction port is provided on the side surface of the front panel, it is necessary to increase the height dimension of the front panel in order to increase the opening area of the suction port. For this reason, if the opening area of a suction inlet is enlarged in order to ensure predetermined | prescribed air volume, the dimension of the height direction of a front panel will become large and the design property will worsen.

  Further, in the configuration in which the suction port is provided on the side surface of the front panel, the air flow sucked from the suction port becomes a flow along the ceiling of the bathroom.

  This invention was made in order to solve such a subject, and it aims at providing the air blower which can suppress dripping of a water | moisture content and can improve designability, ensuring air volume. To do.

  In order to solve the above-described problems, the present invention includes a front panel attached to a main body having air blowing means for sucking and blowing air, and the front panel includes a first suction port through which air sucked from the room passes, A second suction port connected to the first suction port; a suction port airflow path forming member facing the second suction port; and a blower port through which air blown into the room passes. The blower includes a second suction port provided on a surface facing the interior of the panel and a second suction port provided on the surface facing the main body.

  In the present invention, when moisture in the air sucked into the main body from the first suction port through the second suction port is condensed, the moisture dropped from the second suction port is a suction air passage forming member. I can receive it. Thereby, it is suppressed that a water | moisture content dripping outside from the 1st suction inlet which faced the room | chamber interior.

  Moreover, even when the opening area of the suction port is increased in order to secure a predetermined air volume, the first suction port is provided on the surface of the front panel facing the interior of the front panel. Dimensions are suppressed. Furthermore, since air is sucked in from the first suction port provided on the surface facing the room of the front panel, the generation of air flow along the wall surface of the installation place is suppressed, and the wall surface is prevented from being contaminated. Is done.

  In the present invention, it is possible to suppress dripping of water from the inside of the main body while suppressing an increase in the height dimension of the front panel.

It is a block diagram which shows an example of the bathroom ventilation drying heater of this Embodiment. It is a block diagram which shows an example of the bathroom ventilation drying heater of this Embodiment. It is a block diagram which shows an example of the bathroom ventilation drying heater of this Embodiment. It is a block diagram which shows the example of installation of the bathroom ventilation drying heater of this Embodiment. It is explanatory drawing which shows the filter attachment / detachment operation example of the bathroom ventilation drying heater of this Embodiment. It is explanatory drawing which shows the filter attachment / detachment operation example of the bathroom ventilation drying heater of this Embodiment. It is a graph which shows the relationship between the magnitude | size of a suction inlet, and ventilation resistance. It is a top view which shows an example of the front panel as a comparative example. It is a block diagram which shows the modification of the bathroom ventilation drying heater of this Embodiment. It is a block diagram which shows the other modification of the bathroom ventilation drying heater of this Embodiment.

  Hereinafter, with reference to drawings, an embodiment of a bathroom ventilation drying heater as a blower of the present invention will be described.

<Configuration Example of Bathroom Ventilation Dryer / Heater of First Embodiment>
FIG. 1, FIG. 2 and FIG. 3 are block diagrams showing an example of a bathroom ventilating / drying heater according to the present embodiment. FIG. 1 is a side view showing an internal configuration of the bathroom ventilating / drying heater according to the present embodiment. FIG. 2 is another side view showing the internal configuration of the bathroom ventilation dryer / heater according to this embodiment, and FIG. 3 is a plan view of the bathroom ventilation dryer / heater according to this embodiment as viewed from below. . Moreover, FIG. 4 is a block diagram which shows the example of installation of the bathroom ventilation drying heater of this Embodiment.

  1A of bathroom ventilation drying heaters of this Embodiment are attached to the ceiling of the bathroom 100 in the form which the main-body part 3 which has the circulation ventilation fan 2 exposed the front panel 4A.

  1A of bathroom ventilation drying heaters are the circulation ventilation fan 2 which sucks in and blows in air, and has the circulation ventilation inlet 20 into which the air in the bathroom 100 is sucked, and the blower outlet 21 which has the heater 5 and blows out warm air. Prepare.

  In addition, the bathroom ventilation dryer 1A includes a ventilation outlet 23 that exhausts air sucked from the circulation ventilation inlet 20 by the circulation ventilation fan 2 to the outside of the room. Furthermore, the bathroom ventilation dryer 1A includes an air path switching damper 6 that switches an air path between the air outlet 21 and the air outlet 23.

  The circulation ventilation fan 2 includes a multiblade impeller 25, a circulation ventilation fan motor 26 that drives the impeller 25, and a circulation ventilation fan case 27 that forms an air passage. The impeller 25 is driven by the circulation ventilation fan motor 26 to rotate, thereby generating a flow of air blown in the centrifugal direction from the inner side to the outer peripheral side.

  The circulation ventilation fan case 27 rectifies the air blown in the centrifugal direction of the impeller 25 in a shape in which a circular portion along the outer periphery of the impeller 25 and a portion along the tangential direction of the impeller 25 are combined. Thus, a flow of air blown out along the tangential direction of the impeller 25 is generated.

  The circulation ventilation fan 2 is configured such that the direction of the rotation axis of the impeller 25 is along the vertical direction in a state where the bathroom ventilation dryer 1A is installed on the ceiling of the bathroom which is a predetermined installation location.

  Accordingly, the circulation ventilation fan case 27 forms a blowout air passage 28 through which the circulation ventilation fan 2 blows out air sucked from below along the rotation axis of the impeller 25 in the tangential direction of the impeller 25.

  The circulation ventilation fan 2 includes a circulation ventilation suction port 20 into which air is sucked on the lower surface of the circulation ventilation fan case 27. In addition, the circulation ventilation fan 2 has air that is heated by driving the heater 5 on the lower surface of the circulation ventilation fan case 27 or air according to the temperature in the bathroom 100 by deactivating the heater 5. The blower outlet 21 to be blown out is provided.

  Furthermore, the circulation ventilation fan 2 includes a ventilation outlet 23 on the side surface of the circulation ventilation fan case 27 for blowing air out of the room.

  The circulation ventilation suction port 20 is configured by providing a circular opening called a bell mouth below the rotation axis of the impeller 25. The air outlet 21 is configured by providing a rectangular opening having a short side along the air blowing direction of the circulation ventilation fan case 27 on the lower surface of the air outlet 28.

  The blowout air passage 28 constituted by the circulation ventilation fan case 27 is widened at a portion where the air outlet 21 is provided, and is narrowed at a portion where the ventilation air outlet 23 is provided. The blower outlet 21 has a long side that intersects with a side along the air blowing direction of the circulation ventilation fan case 27 matched with the length in the width direction of the main body 3.

  The air path switching damper 6 is an example of an air path opening / closing means, and is rotated between an air outlet 21 provided on the lower surface of the circulation ventilation fan case 27 and a ventilation air outlet 23 provided on a side surface of the circulation ventilation fan case 27. An opening / closing axis 60 is provided.

  The air path switching damper 6 receives a driving force of a damper motor (not shown) and rotates around the shaft 60 to open and close the air outlet 21 and the ventilation air outlet 23.

  In the bathroom ventilation dryer 1A, when the position of the air path switching damper 6 is a circulation position where the ventilation outlet 23 is closed as shown by a solid line in FIG. A circulation air passage communicating with the outlet 21 is formed.

  Further, in the bathroom ventilation dryer 1A, when the position of the air path switching damper 6 is a ventilation position where the air outlet 21 is closed as shown by a one-dot chain line in FIG. 1, the ventilation air outlet 23 opens, and the circulation ventilation air inlet A ventilation air passage communicating from 20 to the ventilation outlet 23 is formed.

  Further, in the bathroom ventilation dryer 1A, when the position of the air path switching damper 6 is a circulation ventilation position between the circulation position and the ventilation position indicated by the broken line in FIG. 1, both the outlet 21 and the ventilation outlet 23 are provided. Open and form both a circulation air channel and a ventilation air channel.

  Thus, in the bathroom ventilation drying / heating machine 1A, the single circulation ventilation fan 2 sucks the air in the bathroom 100, blows the sucked air into the bathroom 100, exhausts the sucked air to the outside, and sucks the air. An operation of blowing a part of the air into the bathroom 100 and exhausting the remaining part outside the room is performed. A circulation fan that circulates room air and a ventilation fan that exhausts room air may be provided independently.

  The heater 5 is an example of a heating unit. In this example, a PTC heater is attached to the air outlet 21, and a heated air outlet air passage is formed at the air outlet 21.

  When the heater 5 is driven and energized, the heater 5 is heated to heat the air passing through the air outlet 21, and hot air is blown out from the air outlet 21. Here, the heater 5 has a configuration in which a large number of fins are attached to the rod-shaped heater member along the longitudinal direction, and the direction in which the fins are arranged is attached to the air outlet 21 as the direction along the longitudinal direction of the air outlet 21. .

  Moreover, the width of the blower outlet 21 in the short direction has such a length that the two heaters 5 are mounted side by side. In this example, the two heaters 5 are mounted side by side in the short direction of the blower outlet 21. Note that the number of heaters 5 may be set according to, for example, a power supply voltage or the like, and one heater 5 may be attached. Further, in this example, the heater 5 driven by electricity as the heating means has been described as an example, but a heater such as a heat exchanger using warm water may be used.

  The main body 3 includes a main body chassis 30 that constitutes the circulation ventilation fan case 27 and a metal case 31 that covers the main body chassis 30. The main body chassis 30 is made of a resin material, and a circulation ventilation fan case 27 covered with a metal case 31 and a flange portion 32 protruding outward from the peripheral edge of the lower end of the main body portion 3 are integrally formed.

  The main body chassis 30 has a lower cover 33 attached to the lower surface exposed from the metal case 31. In the circulation ventilation fan 2, a circulation ventilation suction port 20 and an air outlet 21 are provided in the lower cover 33.

  The metal case 31 is provided with an opening facing the ventilation outlet 23 of the circulation ventilation fan 2, and an exhaust duct connecting portion 34 communicating with the ventilation outlet 23 is attached to a side surface.

  The bathroom ventilation dryer 1 </ b> A includes a front panel 4 </ b> A attached to the lower surface of the main body 3. The front panel 4 </ b> A includes an inlet 40 through which air sucked from the bathroom 100 passes and an outlet grill 41 through which air blown into the bathroom 100 passes.

  The suction port 40 includes an outer suction port 42 provided on a surface of the front panel 4A facing the room, in this example, a lower surface of the front panel 4A facing the bathroom 100, and a circulation ventilation suction port of the circulation ventilation fan 2. 20 is provided with an inner suction port 43 provided on the upper surface of the front panel 4 </ b> A opposite to the front panel 20, and a suction port air passage forming unit 44 that covers the lower side of the inner suction port 43.

  Further, the suction port 40 includes a suction port air passage 45 that connects the outer suction port 42 and the inner suction port 43, and a suction port air passage formation frame portion 46 that forms the suction port air passage 45.

  The outer suction port 42 is an example of a first suction port, and is configured by providing an opening at a position along a predetermined side portion on the lower surface of the quadrangular front panel 4A. In this example, the outer suction port 42 is provided along two sides along the direction in which the suction port 40 and the blowout grill 41 are arranged, and one side opposite to the side where the blowout grill 41 is formed. In addition, a continuous opening is provided in three directions.

  The inner suction port 43 is an example of a second suction port. In order to prevent moisture in the air sucked into the circulation ventilation fan 2 from dropping from the inner suction port 43 to the outside through the outer suction port 42, moisture is dropped. An opening is provided at a position that does not overlap the outer suction port 42 in the vertical direction, which is the direction to obtain.

  In this example, the inner suction port 43 is provided at a position on the inner side of the outer suction port 42 with respect to the outer suction port 42 formed along the side portion of the front panel 4A.

  The suction port air passage forming portion 44 is an example of a suction port air passage forming member, is configured by a portion provided inside the outer suction port 42 so as to face the inner suction port 43, and has a shape larger than that of the inner suction port 43. And cover the entire lower surface of the inner suction port 43. The suction port air passage forming portion 44 is an upper surface facing the inner suction port 43, and a convex portion 44 a is provided on the periphery along the outer suction port 42, and receives moisture or the like dripping through the inner suction port 43. A receiving portion 44b having a shape that does not drop from the outer suction port 42 is formed. Further, the suction port air passage forming portion 44 has a shape such that the lower surface facing the bathroom 100 is the same surface as the lower surface of the front panel 4A. In addition, if the outer side inlet port 42 is the opening which faced the lower side, as for the inlet port air path formation part 44, the lower surface which faced the bathroom 100 protruded with respect to the lower surface of the front panel 4A. It may be a shape or a concave shape.

  The suction port air passage 45 is surrounded by the receiving portion 44 b that is the upper surface of the suction port air passage formation portion 44 and the suction port air passage formation frame portion 46, and is connected to the outer suction port 42 and the inner suction port 43. A space is provided on the upper side of the suction port air passage forming unit 44.

  The suction port air passage forming frame portion 46 is provided with a portion that protrudes obliquely upward from the upper surface of the front panel 4A along the outer periphery of the outer suction port 42 and covers the upper side of the outer suction port 42. Configured. The suction port air passage forming frame portion 46 is an opening provided inside a portion covering the upper side of the outer suction port 42, and the inner suction port 43 is configured. The suction port air passage 45 is oriented so that the wall surface forming the suction port air passage 45 follows the flow of air as the suction port air passage formation frame portion 46 rises obliquely toward the inner suction port 43, Ventilation resistance is reduced.

  The front panel 4A has a shape in which the suction port air passage forming frame portion 46 enters the lower side of the lower cover 33 of the main body portion 3, so that the outer suction port 42 is provided on the lower surface of the front panel 4A. Even in the configuration in which the suction port air passage 45 is provided at a predetermined height on the upper side of the suction port air passage formation portion 44 inside the outer suction port 42, the height direction dimension of the front panel 4A may be reduced. it can.

  The front panel 4A includes a filter 47 attached to the inner suction port 43 and a filter attachment portion 48 to which the filter 47 is detachably attached. The filter 47 includes a ventilation part 47a that allows air to pass therethrough and collects dust, dirt, insects, and the like, and a frame part 47b that supports the ventilation part 47a. In the filter 47, the frame 47b is attached to the inner suction port 43 by the filter attachment portion 48, so that air passes through the ventilation portion 47a and dust, dust, insects and the like are collected.

  Further, the filter 47 covers the entire inner suction port 43, and the ventilation portion 47a has a shape that fits inside the outer suction port 42 and the suction port air passage forming portion 44. Moisture or the like is prevented from dripping from the outer suction port 42. Further, the filter 47 can be bent in the surface direction, and is attached to and detached from the filter attachment portion 48 from the one outer suction port 42 in a curved form.

  The filter mounting portion 48 is attached and detached to ensure a space for bending the filter 47 by widening the distance between the pair of upper and lower and left and right guide portions 48a that guide insertion / extraction of the filter 47 along two opposing sides of the inner suction port 43. A space 48b is provided. Thereby, the filter 47 is attached to and detached from the inner suction port 43 by inserting and removing the filter 47 from the outer suction port 42 formed on the lower surface of the front panel 4 </ b> A into the filter mounting portion 48.

  The blowout grill 41 is configured by providing an opening in the front panel 4 </ b> A at a portion facing the blowout port 21 of the circulation ventilation fan 2.

  The blowout grill 41 is configured by a rectangular opening whose length in the direction along one side of the main body 3 is increased. The outlet grill 41 is provided with a current plate so that air is blown out along the longitudinal direction.

  The front panel 4A is made of a resin material, and the inlet port air passage forming portion 44, the inlet port air passage forming frame portion 46, and the filter mounting portion 48 are integrally molded. Further, the front panel 4 </ b> A is provided with an opening at a portion where the outer suction port 42 is formed and a portion where the blowout grill 41 is formed.

<Installation example of bathroom ventilation drying heater of this embodiment>
Next, with reference to each figure, the installation example of 1 A of bathroom ventilation drying heaters of this Embodiment is demonstrated.

  As shown in FIG. 4, the bathroom ventilation dryer 1 </ b> A is installed on the ceiling panel 101 of the bathroom 100. The ceiling panel 101 of the bathroom 100 is formed with an opening to which the main body 3 of the bathroom ventilation dryer 1A is attached. For example, in the bathroom ventilation dryer 1A, the flange 32 is fixed to the reinforcing member with a screw (not shown). Attached to the ceiling panel 101.

  The bathroom ventilation dryer 1A has a front panel 4A attached to the lower surface of the main body 3, and the outside suction port 42 and the outlet grill 41 of the suction port 40 of the front panel 4A face the inside of the bathroom 100. Is done.

  In the bathroom ventilation dryer 1 </ b> A installed on the ceiling panel 101 of the bathroom 100, the exhaust duct 102 is attached to the exhaust duct connection 34 of the main body 3. The exhaust duct 102 is connected to an outdoor grill 102a attached to an outer wall of a building (not shown) where the bathroom 100 is installed, and the bathroom ventilation / drying heater 1A is connected to the outdoors via the exhaust duct 102.

  The bathroom 100 includes a bathtub 103 and a washing place 104. The bathtub 103 is generally rectangular, and the bathtub 103 and the washing place 104 are arranged along the short direction of the bathtub 103.

  The bathroom 100 includes a land pipe 105 that is a clothes-drying member at the top of the bathtub 103. The land pipe 105 extends along the longitudinal direction of the bathtub 103 and is attached between the opposing wall surfaces 106 a and 106 b of the bathroom 100.

  In addition, the number of the land re-pipe 105 installed in the bathroom 100 is about one or two. In this example, an example in which one land re-pipe 105 is arranged is shown. Further, the clothes drying member is not limited to a pipe-like member, and may be a string or other members as long as an object to be dried such as laundry can be dried.

  1 A of bathroom ventilation drying heaters are installed in the upper part of the bathtub 103 in the direction where the longitudinal direction of the blower outlet grille 41 is orthogonal to the longitudinal direction of the land pipe 105. Thereby, in the bathroom ventilation drying / heating machine 1 </ b> A, the air blown out from the blowout grill 41 spreads mainly in the direction orthogonal to the land pipe 105.

<Operation example of bathroom ventilation dryer / heater of this embodiment>
Next, with reference to each figure, the operation example of 1 A of bathroom ventilation drying heaters of this Embodiment is demonstrated.

  When the heating operation mode is selected, the bathroom ventilation dryer 1A sets the air path switching damper 6 to the circulation position indicated by the solid line in FIG. 1 and drives the circulation ventilation fan motor 26 to rotate the impeller 25. Energize the heater 5.

  In the bathroom ventilation dryer 1A, the impeller 25 rotates, so that the air in the bathroom 100 sucked from the outer suction port 42 at the suction port 40 of the front panel 4A passes through the suction port air passage 45 and enters the inner suction port 43. To the circulation ventilation inlet 20.

  In the heating operation mode, since the air path switching damper 6 is in the circulation position, substantially the entire amount of the air in the bathroom 100 sucked from the circulation ventilation suction port 20 flows to the air outlet 21. In the heating operation mode, the air flowing through the air outlet 21 is heated by the heater 5 so that warm air is blown out from the air outlet grill 41 of the front panel 4A.

  Thereby, the temperature in the bathroom 100 can be raised to a temperature suitable for bathing. In the heating operation mode, a preheating operation mode in which the temperature of the bathroom 100 is raised in a short time by setting a predetermined air volume and heater output in a state where there is no person in the bathroom 100 before bathing, and the air volume and heater output. The bathing heating operation mode for maintaining the temperature of the bathroom 100 during bathing or the like may be switched.

  As another operation mode executed in the bathroom ventilation drying / heating machine 1A, in the drying operation mode, the air path switching damper 6 is set to the circulation ventilation position shown by the broken line in FIG. 1, and the circulation ventilation fan motor 26 is driven to operate the impeller. While rotating 25, the heater 5 is energized.

  In the bathroom ventilation dryer 1A, the impeller 25 rotates, so that the air in the bathroom 100 sucked from the outer suction port 42 at the suction port 40 of the front panel 4A passes through the suction port air passage 45 and enters the inner suction port 43. To the circulation ventilation inlet 20.

  In the dry operation mode, since the air path switching damper 6 is in the circulation ventilation position, in the blowout air path 28, the circulation air path communicating from the circulation ventilation inlet 20 to the outlet 21, and the ventilation outlet from the circulation ventilation inlet 20 Both ventilating air passages communicating with 23 are formed.

  Thereby, a part of the air in the bathroom 100 sucked from the circulation ventilation suction port 20 by the rotation of the impeller 25 flows to the air outlet 21. Moreover, the remainder of the air of the bathroom 100 sucked in from the circulation ventilation inlet 20 flows to the ventilation outlet 23, passes through the exhaust duct 102, and is exhausted from the outdoor grill 102a to the outdoors.

  In the drying operation mode, the air flowing through the air outlet 21 is heated by the heater 5 so that warm air is blown out from the air outlet grill 41 of the front panel 4A.

  Thereby, in dry operation mode, while being able to dry by applying warm air with respect to to-be-dried objects, such as clothes hung on the land re-pipe 105, the air containing moisture in the bathroom 100 is exhausted outdoors, Drying can be promoted by ventilating air in a washroom or the like.

  In the circulation ventilation operation mode, the bathroom ventilation dryer 1A sets the air path switching damper 6 to the circulation ventilation position indicated by the broken line in FIG. 1, drives the circulation ventilation fan motor 26 with the heater 5 not driven, and the impeller 25. Rotate. Here, in the drying operation mode and the circulation ventilation operation mode described above, the opening degree of the air path switching damper 6 is changed so that the ventilation airflow, which is the airflow exhausted to the outdoors, increases in the circulation ventilation operation mode. May be.

  In the bathroom ventilation dryer 1A, the impeller 25 rotates, so that the air in the bathroom 100 sucked from the outer suction port 42 at the suction port 40 of the front panel 4A passes through the suction port air passage 45 and enters the inner suction port 43. To the circulation ventilation inlet 20.

  In the circulation ventilation operation mode, since the air path switching damper 6 is in the circulation ventilation position, a part of the air in the bathroom 100 sucked from the circulation ventilation suction port 20 flows to the air outlet 21. Moreover, the remainder of the air of the bathroom 100 sucked from the circulation ventilation inlet 20 flows to the ventilation outlet 23 and is exhausted outdoors.

  In the circulation ventilation operation mode, since the heater 5 is not driven, the air flowing through the outlet 21 is blown out from the outlet grill 41 of the front panel 4A according to the room temperature.

  As a result, in the circulation ventilation operation mode, air is circulated in the bathroom 100 and a part of the air in the bathroom 100 is exhausted to the outside for ventilation. Drying of wall surfaces, floor surfaces, etc. can be promoted.

  In the ventilation operation mode, the air path switching damper 6 is set to the ventilation position indicated by the alternate long and short dash line in FIG. 1, the heater 5 is not driven, and the circulation ventilation fan motor 26 is driven to rotate the impeller 25.

  In the bathroom ventilation dryer 1A, the impeller 25 rotates, so that the air in the bathroom 100 sucked from the outer suction port 42 at the suction port 40 of the front panel 4A passes through the suction port air passage 45 and enters the inner suction port 43. To the circulation ventilation inlet 20.

  In the ventilation operation mode, since the air path switching damper 6 is in the ventilation position, substantially the entire amount of the air in the bathroom 100 sucked from the circulation ventilation inlet 20 flows to the ventilation outlet 23 and is exhausted to the outside. Therefore, in the ventilation operation mode, steam and moisture in the bathroom 100 can be discharged to suppress dew condensation and the like, thereby suppressing the occurrence of mold.

  The bathroom ventilation dryer 1A has a 24-hour ventilation operation mode. In the 24-hour ventilation operation mode, the above-described ventilation mode is always executed with an air volume that can ventilate the air in the building in which the bathroom ventilation dryer 1A is installed in a predetermined time. Therefore, in the 24-hour ventilation operation mode, indoor air can be replaced with fresh air.

  Moisture is contained in the air of the bathroom 100 sucked in by the circulation ventilation fan 2 in the bathroom ventilation dryer 1A. For this reason, moisture in the air in the bathroom 100 sucked from the outer suction port 42 at the suction port 40 of the front panel 4A may adhere to the filter 47 attached to the inner suction port 43 and cause condensation.

  Further, moisture in the air that passes through the filter 47 and is sucked into the circulation ventilation fan 2 may adhere to the impeller 25 and the inner surface of the circulation ventilation fan case 27 in the circulation ventilation fan 2 to cause condensation.

  In the bathroom ventilation dryer 1A, the lower side of the inner suction port 43 to which the filter 47 is attached is covered with the suction port air passage forming unit 44. As a result, even if moisture that adheres to the inner surface of the filter 47, the impeller 25 in the circulation ventilation fan 2 and the inner surface of the circulation ventilation fan case 27 is dripped, the dripped moisture is received by the suction port air passage formation unit 44. Received at portion 44b. The suction port air passage forming portion 44 is formed with the convex portion 44a along the outer edge portion of the receiving portion 44b, so that the moisture received by the receiving portion 44b is suppressed from dripping to the outside from the receiving portion 44b. Accordingly, moisture in the air sucked by the circulation ventilation fan 2 is suppressed from dripping to the outside from the outer suction port 42.

  Further, in the bathroom ventilation dryer 1A, the outer suction port 42, the inner suction port 43, the suction port air passage forming portion 44, the suction port air passage forming frame portion 46, and the filter mounting portion 48 are formed integrally with the front panel 4A. ing. Thereby, an opening and a gap for forming the suction port 40 are not required on the lower surface of the front panel 4 </ b> A except for the outer suction port 42. Therefore, the front panel 4A does not have an opening or a gap in which moisture that adheres to the filter 47, the impeller 25 in the circulation ventilation fan 2, the inner surface of the circulation ventilation fan case 27, and the like and drops on the outside drops. Therefore, the moisture in the air sucked by the circulation ventilation fan 2 is suppressed from dripping to the outside from the outer suction port 42.

  In the bathroom ventilation dryer 1A, outer suction ports 42 are formed in three directions excluding the side where the air outlet grille 41 is formed on the lower surface of the rectangular front panel 4A. Thus, it is possible to suppress the occurrence of a phenomenon called a shortcut in which the air blown out from the blowout grill 41 is sucked from the outer suction port 42 without circulating in the bathroom 100. In this example, the outer suction ports 42 provided in the three directions are configured as continuous openings, but may be configured as independent openings.

  Here, the outer suction port 42 may be provided in one direction along one side portion on the side opposite to the side where the air outlet grille 41 is formed on the lower surface of the rectangular front panel 4A. It is good also as a structure provided in two directions of two sides along the direction where the suction inlet 40 and the blower outlet grille 41 are located in a line. However, by providing the outer suction ports 42 in three directions, the wind speed can be suppressed when a predetermined air volume is obtained, compared to the case where the outer suction ports are provided in one direction or two directions, and wind noise is reduced. It is possible to reduce the noise by suppressing the generation of such sounds. Moreover, the side on which the outlet grille 41 is formed is configured such that the shortcut can be suppressed by the shape of the outlet grille 41, specifically, the shape and arrangement of the outlet louver (not shown) provided in the outlet grille 41. The outer suction ports 42 may be provided in four directions including the sides.

<Example of filter attachment / detachment operation of bathroom ventilation dryer / heater of this embodiment>
FIG.5 and FIG.6 is explanatory drawing which shows the example of filter attachment / detachment operation | movement of the bathroom ventilation drying heater of this Embodiment, Next, with reference to each figure, in the bathroom ventilation drying heater 1A of this Embodiment The operation of attaching / detaching the filter 47 to / from the front panel 4A will be described.

  In the operation of attaching the filter 47, as shown in FIG. 5, the filter 47 is bent from the outer suction port 42 formed on the lower surface of the front panel 4A so that the filter 47 is curved. The part 47b is inserted. The filter 47 is inserted in the direction along the inner suction port 43 as shown in FIGS. 1 and 2 by being inserted along the guide portion 48a.

  In the operation of removing the filter 47, as shown in FIG. 6, the end portion of the filter 47 is bent and the end portion side frame portion 47b is removed from the filter attachment portion 48 using the attachment / detachment space 48b of the filter attachment portion 48. . Then, as shown in FIG. 5, as a form in which the filter 47 is curved, the filter 47 is extracted from the outer suction port 42 formed on the lower surface of the front panel 4A.

  The bathroom ventilation dryer 1A does not require an opening for attaching / detaching the filter 47 or a configuration for opening / closing the opening by attaching / detaching the filter 47 attached to the inner inlet 43 from the outer inlet 42. Thereby, it is suppressed that the water | moisture content in the air inhaled with the circulation ventilation fan 2 dripping outside from the opening for attaching / detaching the filter 47 outside.

<Relationship between inlet size and ventilation resistance>
FIG. 7 is a graph showing the relationship between the size of the inlet and the ventilation resistance, and FIG. 8 is a plan view showing an example of a front panel as a comparative example.

  In the front panel 4A of the present embodiment, the change in ventilation resistance was measured by changing the size of the outer suction port 42. In this example, the ventilation resistance was measured by changing the dimension of the outer suction port 42 in the short direction as the size of the outer suction port 42. Specifically, as shown in FIG. 1, the length between the end portion on the inner edge side of the outer suction port 42 and the suction port air passage forming frame portion 46 constituting the outer edge of the outer suction port 42 is the longest. Ventilation resistance was measured by changing the dimension Z at the narrowing position.

In FIG. 7, the ventilation resistance when the dimension Z in the short direction of the outer suction port 42 is 10 mm (opening area of the outer suction port 42, hereinafter referred to as opening area: 7200 mm ² ) is indicated by a two-dot chain line, and the dimension Z is 20 mm. The ventilation resistance when (opening area: 14400 mm ² ) is indicated by a one-dot chain line, and the ventilation resistance when dimension Z is 25 mm (opening area: 18000 mm ² ) is indicated by a solid line.

  In the front panel 400 of the comparative example shown in FIG. 8, the suction port 401 and the air outlet 402 are provided on the lower surface of the front panel 400. The ventilation resistance in the front panel 400 of such a comparative example is shown by a broken line in FIG.

In the bathroom ventilation dryer, when the required air volume is about 300 mm ² , if the dimension Z in the short direction of the outer suction port 42 is 10 mm, the ventilation resistance is larger than that of the comparative example. On the other hand, it can be seen that if the dimension Z is increased and the opening area is increased, the ventilation resistance is reduced. understood.

  In addition, as shown in FIG. 1, when the dimension from the edge part of the inner edge side of the outer side inlet port 42 which is the dimension of the height direction of the inlet port 45 connected with the outer side inlet port 42 to the inner side inlet port 43 is set to H. Even if the dimension Z in the short side direction of the outer suction port 42 is made larger than the dimension H in the height direction of the suction port air passage 45, the dimension of the narrowest part is H, so the upper limit of the dimension Z is the dimension. H. In this example, the dimension H in the height direction of the suction port air passage 45 is 40 mm.

For this reason, the dimension Z in the short direction of the outer suction port 42 is preferably 20 mm or more (opening area: 14400 mm ² or more), 40 mm or less (opening area: 28800 mm ² or less), and more preferably 25 mm or more (opening). Area: 18000 mm ² or more), 40 mm or less (opening area: 28800 mm ² or less).

  When the suction port is provided on the side surface of the front panel, the height dimension of the front panel is set to 25 (mm) or more in order to make the short dimension of the suction port 25 (mm). There is a need. On the other hand, in the front panel 4A of the present embodiment, the outer suction port 42 is configured by providing an opening on the lower surface of the front panel 4A, so that the height dimension of the front panel 4A is the outer side. It is not affected by the inlet 42.

  Thereby, for example, even when the dimension in the short direction of the outer suction port 42 is 25 (mm), the dimension in the height direction of the front panel 4A can be 25 (mm) or less. Thinning is possible. Therefore, the designability can be improved.

<Modification of Bathroom Ventilation Drying Heater of this Embodiment>
FIG. 9 is a block diagram showing a modification of the bathroom ventilation dryer / heater of the present embodiment. In the bathroom ventilation drying / heating machine of the modified example, a water receiving portion 49 is provided in the outer suction port 42 of the front panel 4B. The water receiving portion 49 is formed along the outer edge portion of the outer suction port 42 and receives water flowing along the suction port air passage forming frame portion 46.

  Thereby, even when the moisture condensed by the filter 47 flows to the side, or when moisture in the air sucked from the outer suction port 42 adheres to the suction port air passage forming frame portion 46 and is condensed. The water flowing along the inlet air passage formation frame 46 is received by the water receiver 49. Accordingly, it is possible to suppress moisture from dripping to the outside from the outer suction port 42.

  FIG. 10 is a block diagram showing another modification of the bathroom ventilation dryer / heater according to the present embodiment. In the bathroom ventilation dryer / heater of another modified example, the suction port air passage forming frame portion 46 of the front panel 4C extends vertically from the upper surface of the front panel 4C along the outer periphery of the outer suction port 42. A portion that protrudes and covers the upper side of the outer suction port 42 is provided. The opening area of the suction inlet air passage 45 is enlarged by forming the suction inlet air passage formation frame 46 so as to rise in the vertical direction.

  In the present embodiment, the filter 47 is inserted and removed from the outer suction port 42 in the front panels 4A to 4C. However, the side of the front panels 4A to 4C exposed to the indoor side from the ceiling panel 101 of the bathroom 100 is used. Alternatively, the filter 47 may be inserted and removed from the side between the front panels 4A to 4C and the main body 3.

  In addition, the filter 47 may be inserted into and removed from the outer suction port 42, and the filter mounting portion may be provided on the main body 3 side. Further, the filter 47 is inserted and removed from the side of the front panels 4A to 4C or from the side between the front panels 4A to 4C and the main body 3, and the filter mounting portion may be provided on the front panels 4A to 4C. Alternatively, the filter mounting part may be provided on the main body part 3 side.

  Even in a configuration in which the filter 47 is inserted and removed from the side of the front panels 4A to 4C or from the side between the front panels 4A to 4C and the main body 3, the filter 47 is inserted into and removed from the lower surfaces of the front panels 4A to 4C. Therefore, it is not necessary to have an opening for opening or a configuration for opening and closing the opening, so that the dripping of moisture to the outside of the front panels 4A to 4C is suppressed.

  The present invention is applied to a blower or an air conditioner provided with an air inlet.

  DESCRIPTION OF SYMBOLS 1A ... Bathroom ventilation drying heating machine, 2 ... Circulation ventilation fan, 3 ... Main-body part, 4A, 4B, 4C ... Front panel, 40 ... Suction port, 41 ... Air outlet grille 42 ... Outer suction port, 43 ... Inner suction port, 44 ... Suction port air passage forming portion, 44b ... Receiving portion, 45 ... Suction port air passage, 46 ... Suction port Air path forming frame part, 47 ... filter, 48 ... filter mounting part, 5 ... heater, 100 ... bathroom

Claims (5)

A front panel attached to the main body having air blowing means for sucking and blowing air;
The front panel includes a first suction port through which air sucked from the room passes, a second suction port connected to the first suction port, and a suction port airflow path forming member facing the second suction port. A blower outlet through which air blown into the room passes, the first suction port provided in a surface facing the room of the front panel, and the second suction port provided in a surface facing the body portion. A blower characterized by that. The blower according to claim 1, wherein the front panel includes a filter attachment portion to which the filter inserted / removed from the first suction port is attached. The air blower according to claim 2, wherein the filter attachment portion is provided along the second suction port so that the filter is attached to the second suction port. The front panel is
The first suction port, the second suction port, the suction port air passage forming member, and the suction port air passage connecting the first suction port and the second suction port together with the suction port air passage forming member The blower according to claim 2 or 3, wherein the inlet air passage forming frame portion to be formed, the filter mounting portion, and the air outlet are formed by integral molding. The front panel has two sides along the direction in which the first inlet and the outlet are aligned, and three directions along one side opposite to the side where the outlet is formed. The blower according to claim 4, wherein the first suction port is provided.

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